43 lines
1020 B
JavaScript
43 lines
1020 B
JavaScript
const MemoryProvider = require('../../src/providers/memory');
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const { parseBJSON } = require('../lib/test-utils');
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class SerializableMemoryProvider extends MemoryProvider {
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constructor(name, jsonImage) {
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super(name);
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this.unparsedJSONImage = jsonImage;
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}
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/**
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* In addition to the usual setup of a Memory provider,
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* also parse and overwrite the internal database.
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*/
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open(callback) {
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super.open(err => {
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if(err) {
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return callback(err);
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}
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// If we don't have an image to import, leave db as is
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if(!this.unparsedJSONImage) {
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return callback();
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}
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// Try to import the fs image from JSON
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try {
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this.db = parseBJSON(this.unparsedJSONImage);
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this.unparsedJSONImage = null;
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callback();
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} catch(e) {
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callback(new Error(`unable to parse JSON filesystem image: ${e.message}`));
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}
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});
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}
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export() {
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return JSON.stringify(this.db);
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}
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}
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module.exports = SerializableMemoryProvider;
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